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Really really easy question

  1. Nov 22, 2006 #1
    a bird flies 10 m/s east for 2 seconds, then 10 m/s north for 1 second,whats the avg. velocity?
    Is all you do add the vectors? The x component would be 20 and y be 10? and get around 22?


    A car's velocity changes from 13.9 m/s east to 12.8 m/s northeast. What is the change in it's velocity?
     
  2. jcsd
  3. Nov 22, 2006 #2

    PhanthomJay

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    Try to work on the first problem before tackling the second one.
     
  4. Nov 22, 2006 #3

    OlderDan

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    The average velocity is the total displacement divided by the total time.

    The change in velocity is the vector difference between final velocity and initial velocity
     
  5. Nov 22, 2006 #4
    so wuld the first one be 20/3 which is 7.33 m/s at 26.6 degrees?
     
  6. Nov 23, 2006 #5

    PhanthomJay

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    You mean of course 22/3. Your answer is just about correct. you should add, also, 26.6 degrees north of east.
     
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